A $210-$m long bridge is improperly designed so that it cannot expand with temperature. It

is made of concrete with $=1\mathrm{.}10$X$10-5$C$-1.$ Assuming that the maximum change in

temperature at the site is expected to be $27$C$,$ find the change in length the span would

undergo if it were free to expand.

a$.$ mm

$16.$ If the maximum stress of the bridge, described above, can withstand without crumbling is

$2\mathrm{.}0107$ Pa$,$ will it crumble because of this temperature increase? Young's modulus for

concrete is about $2\mathrm{.}01010$ Pa$.$

a$.$ Yes or No

b$.$ What is the maximum stress?